#online_exam_controller class OnlineExamController < ApplicationController def index @user=current_user @employee=Employee.find_by_employee_number(@user.username) # flash[:notice]=#{@employee.id} @subjects=EmployeesSubject.find_all_by_employee_id(@employee.id) @subject_name=[] @batch_details=[]

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Asked: May 21, 20262026-05-21T20:23:18+00:00 2026-05-21T20:23:18+00:00

#online_exam_controller class OnlineExamController < ApplicationController def index @user=current_user @employee=Employee.find_by_employee_number(@user.username) # flash[:notice]=#{@employee.id} @subjects=EmployeesSubject.find_all_by_employee_id(@employee.id) @subject_name=[] @batch_details=[]

0

#online_exam_controller
class OnlineExamController < ApplicationController
   def index
    @user=current_user
    @employee=Employee.find_by_employee_number(@user.username)
    # flash[:notice]="#{@employee.id}"
    @subjects=EmployeesSubject.find_all_by_employee_id(@employee.id)
    @subject_name=[]
    @batch_details=[]
    @display_details=[[]]
    @count=0
    for @t in @subjects
     @subject_name[@count]=Subject.find(@t.subject_id,:select=>'name,code,batch_id')
     @batch_details[@count]=Batch.find(@subject_name[@count].batch_id,:select =>'name')
     @display_details[@count][0]=@subject_name[@count].name+" "+@batch_details[@count].name
     @display_details[@count][1]=@t.subject_id
     @count+=1
    end
   end
   def show
    if params[:subject_id]==''
     @question_type=[]
    else
     @question_type=['multiple_choice','fill_ups','matches','descriptive']
     @subject_id=params[:subject_id]

   end
   respond_to do |format|
   format.js {render:action=>'show' }
   end
  end
  def new_multiple_choice
   @quiz=MultipleChoiceQuestion.new
   @subject=Subject.find params[:id] if request.xhr? and params[:id]
   respond_to do |format|
    format.js {render :action => 'new_multiple_choice'}
   end
  end
 end
#index.html.erb
<div id="content-header">
<img src="/images/show_settings.png" alt="Subjects"/>
<h1>Subjects</h1>
<h3>Home</h3>
 <div id="app-back-button">
 <%= link_to_function image_tag("/images/buttons/back.png",:border => 0), "history.back()" %>
 </div>
 </div>

 <div id="page-yield">
 <% unless flash[:notice].nil? %>
 <p class="flash-msg"> <%= flash[:notice] %> </p>
 <% end %>
 <div class="box">

  <div class="label-field-pair">
  <label for="student_course">Select a batch:
  <%= image_tag("loader.gif",:align => "absmiddle",:border => 0,:id => "loader", :style =>"display: none;" ) %>
  </label>
  <div class="text-input-bg">
  <%= select :subject,:id,
   @display_details.map {|b| [b[0],b[1]]},
  {:prompt => 'selecct subject'},
  {:onchange =>"#{remote_function(
  :url=>{:action => 'show'},
  :before=> "Element.show('loader')",
  :success => "Element.hide('loader')" )}"}%>

  </div></div>

  <div id="subjects"></div>
  <div id="modal-box" style="display:none;"></div>

  <div class="extender"></div>
  </div></div>
  #show.rjs
  if @question_type.empty?
   page.replace_html 'subjects', :partial => 'question_bank'
  else
   page.replace_html 'subjects', :partial => 'question_bank'
  end
  #_question_bank.html.erb
  <% unless @question_type.nil? %>
   <div class="add_sub">
   <%= link_to_remote 'Add Multiple Question ', :url => { :action =>   'new_multiple_choice', :id => @subject_id } %>
   </div>
   <div class="add_sub">
    <%= link_to_remote 'Add Fill Up Question', :url => { :action => 'new_fill_ups', :id => @subject_id } %>
   </div>
   <div class="add_sub">
   <%= link_to_remote 'Add Match Question', :url => { :action => 'new_matches', :id => @subject_id } %>
   </div>
   <div class="add_sub">
   <%= link_to_remote 'Add Descriptive Question', :url => { :action => 'new_descriptive', :id => @subject_id } %>
   </div>
   <% end %>
  #new_multiple_choice.rjs
  page.replace_html 'modal-box', :partial => 'new_multiple_choice'
  page << "Modalbox.show($('modal-box'), {title: 'Add new multiple choice questions', width: 500});"
   #_new_multiple_choice.html.erb

   <div id="grading-levels-form">
   <h4><%= @subject.name unless @subject.nil? %></h4>

   <% form_remote_for @quiz do |f| %>

    <% subject_id = (@subject.nil? ? nil : @subject.id) %>
    <% batch_id = (@subject.nil? ? nil : @subject.batch_id ) %>
    <%= f.hidden_field :batch_id, :value => batch_id %>
    <%= f.hidden_field :subject_id, :value => elective_group_id %>

     <div id="form-errors"></div>

     <div class="label-field-pair">
     <div class="label-container"><%= f.label :question %></div>
     <div class="input-container"> <%= f.text_field :question %></div>
     </div>
     <div class="label-field-pair">
     <div class="label-container"><%= f.label :answer1 %></div>
     <div class="input-container"> <%= f.text_field :answer1 %></div>
     </div>
     <div class="label-field-pair">
     <div class="label-container"><%= f.label :answer2 %></div>
     <div class="input-container"> <%= f.text_field :answer2 %></div>
     </div>
     <div class="label-field-pair">
     <div class="label-container"><%= f.label :answer3 %></div>
     <div class="input-container"> <%= f.text_field :answer3 %></div>
     </div>
     <div class="label-field-pair">
     <div class="label-container"><%= f.label :answer4 %></div>
     <div class="input-container"> <%= f.text_field :answer4 %></div>
     </div>

     <div class="label-field-pair">
     <div class="label-container"> <%= f.label :correct_option %></div>
     <div class="input-container"><%= f.select (:correct_option,%w{1,2,3,4}) %></div>
     </div>



     <%= f.submit "", :value => "► Save", :class => "submit_button" %>

     <% end %>
     </div>
     #server log
     Processing OnlineExamController#show (for 127.0.0.1 at 2011-04-05 19:31:00) [POST]
     Parameters: {"action"=>"show",      "authenticity_token"=>"OXozxkL1y+gCKkWxsUbAR8nH9Cb8MJJJPtnEVw8Y1AI=", "controller"=>"online_exam"}
     User Columns (0.8ms) SHOW FIELDS FROM `users`
     User Load (0.1ms) SELECT * FROM `users` WHERE (`users`.`id` = 8)
     CACHE (0.0ms) SELECT * FROM `users` WHERE (`users`.`id` = 8)
      Rendering online_exam/show
      Rendered online_exam/_question_bank (5.6ms)
      Completed in 21ms (View: 8, DB: 3) | 200 OK [http://localhost/online_exam/show]
       SQL (4.7ms) SET SQL_AUTO_IS_NULL=0


      Processing OnlineExamController#show (for 127.0.0.1 at 2011-04-05 19:31:02)      [POST]
       Parameters: {"action"=>"show",   "authenticity_token"=>"OXozxkL1y+gCKkWxsUbAR8nH9Cb8MJJJPtnEVw8Y1AI=", "controller"=>"online_exam"}
     User Columns (1.0ms) SHOW FIELDS FROM `users`
     User Load (0.8ms) SELECT * FROM `users` WHERE (`users`.`id` = 8)
     CACHE (0.0ms) SELECT * FROM `users` WHERE (`users`.`id` = 8)
     Rendering online_exam/show
     Rendered online_exam/_question_bank (5.6ms)
     Processing OnlineExamController#new_multiple_choice (for 127.0.0.1 at 2011-04-05 19:31:04) [POST]
     Parameters: {"action"=>"new_multiple_choice",   "authenticity_token"=>"OXozxkL1y+gCKkWxsUbAR8nH9Cb8MJJJPtnEVw8Y1AI=",  "controller"=>"online_exam"}
     User Columns (1.1ms) SHOW FIELDS FROM `users`
     User Load (0.1ms) SELECT * FROM `users` WHERE (`users`.`id` = 8)
     CACHE (0.0ms) SELECT * FROM `users` WHERE (`users`.`id` = 8)
       MultipleChoiceQuestion Columns (1.0ms) SHOW FIELDS FROM     `multiple_choice_questions`
     Completed in 22ms (View: 2, DB: 2) | 200 OK [http://localhost/online_exam/new_multiple_choice]
       SQL (0.1ms) SET SQL_AUTO_IS_NULL=0 here

I know code is very long and been breaking my head for hours,My problem _new_multiple_choice.html.erb is not rendered when i click the first link at the end.

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1 Answer

Editorial Team · Answer 1 · 2026-05-21T20:23:19+00:00

Most Rubyists would be horrified by this code and run away. Instead of answering your question (which, if solved, would make your app even more horrific), here are some basics; do these so you can start asking questions that people would answer.

Rails does most of the work for you so you don’t have to find relationships with ids or set arrays up yourself. Instance variables are used to pass things on to the view. Try to pass the view exactly what it needs and no more.

First, set up your relationships with the models…

models/user.rb

class User
  has_one :employee
end

models/employee.rb

class Employee
  belongs_to :user
  has_and_belongs_to_many :employee_subjects
end

models/employee_subject.rb

class EmployeeSubject
  has_and_belongs_to_many :employees
  has_one :batch
end

models/batch.rb

class Batch
  belongs_to :employee_subject
end

has_and_belongs_to_many is a bit tricky, so read the docs carefully:
http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#method-i-has_and_belongs_to_many

Then you can simplify your controller actions to one line…

controllers/online_exams_controller.rb

def index
  @subjects = current_user.employee.employee_subjects
end

and in your views…

views/online_exams/index.html.erb

<ul>
<%= render :partial => '/subjects/list_view', :collection => @subjects, :as => :subject %>
</ul>

views/employee_subjects/_list_view.html.erb

<li>
  Name: <%= subject.name -%>, Code: <%= subject.code -%>,
  Batch Name: <%= subject.batch.name -%>
</li>

Before you do any more though, think through how your application’s objects should be organised and related, and try to use names that make sense. Read more about object-oriented programming concepts, and follow some Rails tutorials, and get used making apps with 10 times fewer lines of code!

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#online_exam_controller class OnlineExamController < ApplicationController def index @user=current_user @employee=Employee.find_by_employee_number(@user.username) # flash[:notice]=#{@employee.id} @subjects=EmployeesSubject.find_all_by_employee_id(@employee.id) @subject_name=[] @batch_details=[]

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